Washer for paper-pulp



(No Model.) .7 33heets-Sheet 1. G. A. WHITING. Washer for Paper Pulp, 8:0.

No. 232,383. Patented Sept. 21, I880.

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G. A. WRITING.

Washer for Paper Pulp, 8w.

No. 232,383. Patented Sept. 21, 1880.

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NPUERS, FHDTO-LITHDGRAPHER. WASHINGTON. O G.

(No Modeh) r 3 Sheets-Sheet 3. G. A. WHITING. Washer for Paper'Pulp, 830.

No. 232,383. Patented Sept. 21, 1880.

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UNITED STATE PATENT Orrrcno GEORGE A. W'HITING, OF NEENAH, WISOONSIN.

WASHER FOR PAPER-PULP, 80c.

SPECIFICATION forming part of Letters Patent No. 232,383, dated September 21, 1880.

Application filed May 24, 1880.

To all whom tt may concern:

Be it known that I, GEORGE A. W'I-IITING, 0f Neenah, in the county of Winnebago and State of Wisconsin,haveinvented acertain new and useful Improvement in ashers for Paper-Pulp and other Fibrous Substances; and I declare that the following; is a full, clear, and exact description of the same, reference beinghad to the accompanying drawings, in which- Figure 1 is a front elevation of my invention, the vat being shown in section. Fig. 2 represents a longitudinal vertical section of my invention. Fig. 3 represents atransverse section on the line 00 m in Fig. 1.

The same letters denote the same parts in My invention relates to apparatus for washing paper-pulp, wool, and other fibrous substances; and it consists in supporting the washer (or revolving drum which dips up the dirty water from the vat and discharges it out side of the vat) on gudgeons projecting from its ends, and thereby avoiding the obstruction caused by the customary sh aft run nin gthrou gh the washer from end to end.

It also consistsin having the discharge opening or openings between the washer and its bearing, and thus not obstructed by the latter, as is the case with the customary mode of discharge through the end of the cylinder.

It further consists in an adjustable receiver and discharger rigidly supported in the middle of the washer on bearings entirely independent of the washer, so that the revolution of the latter has no effect on the position of the receiver.

It still further consists in giving to the buckets of the washer a peculiar shape, which facilitates both the fillingand emptying of them, and in the subsidiary devices and combina tions of devices which I will hereinafter specifically point out.

The object of the whole is to facilitate and accelerate the changing of the water in the cleansing-vat.

In the drawings, A denotes a portion of the vat in which the pulp, wool, or other substance is washed, and which may be of any suitable construction. Only a section of one end is shown. In this is set the washer B, which (No model.)

may also be of any suitable exterior shape. In the drawings it is represented as a right octagonal prism, and in Fig. 1 two of its sides are represented as covered in the customary manner with wire-cloth, to prevent any of the fiber from passing into the buckets with the water, a third side being represented as uncovered in order to show the braces b, which strengthen thefra me-work, and the outer sides, 0, of the buckets C. One end of the washer is represented as closed, a discharge at one end being ordinarily sufficient. From the other end projects the discharging-cylinder I), having in its convex surface the dischargeopenings (Z. From the outer end of this cylinder, (which may also have dischargeopenings, if desired,) and from the closed end of the washer, project the hollow gudgeons b, which may be ath antageously made of iron pipe, and which are rigidly atiixed to the washer or cylinder and turn in the boxes E, which are rigidly fixed in supports of anysuitable construction, so that on these hearings the washer may have a rotary motion in the vat. These gudgeonsattheendsof the washer take the place of the shaft which in the ordinary construction passes through the central portion from end to end, and, with its braces, takes up a large portion of the space which in my construction is left free for discharging.

In the drawings the box nearest the discharging end of the washer is represented as supported on brackets 6, attached to the wall of the vat, while the box at the other end is supported on a standard, 6, set up within the vat. Through each of the gudgeons b, in the direction of its cylindrical altitude, but not in contact with the gudgeon itself, passes a rod, f, the outer end of which rests in an extension, G, of the box IE, and is held firmly in its seat there by a set-screw, f. The inner end is rigidly set in the end of a receiving and discharging vessel, F, (preferabl y an open semi-cylindrical trough, but which may be of any usual form,) which extends through the center of the washer from end to end and projects part way into the dischargingcylinder. Bymeans of the rods fand set screws f this receiver may be set at a level just below the imaginary axis of the washer, or at any desired angle. It is almost entirely open at the end which projects into the discharging-cylinder, only enough of the end piece bein gretained to form a suitable connection between the opposite sides and a firm attachment for the inner end of the supporting-rod. It is obvious that the supportof the receiver is thus entirely independent of the washer and its revolution, so that the receiver always remains in the position which has been selected as most advantageous for receiving the water, and the obstructions to a free discharge which are caused in ordinary washers by the bearings are practically reduced to nothing.

As shown in the drawings, the receiver is horizontal; but one end may be somewhat elevated above the other, if desired,by giving the rodfat that end an angular bend.

The buckets O extend from end to end through the interior of the washer, and are arranged radially around its central space. Their forward or outer edges, 0, do not quite touch its inner periphery, and the extremities of their inner edges, 0 stop so far short of the center as to leave a perfectly free cylindrical space about twice as great as the receiver F.

The shape of the buckets is shown in Fig. 3. It is, in general, that of two sides of a triangle. The forward side, 0, which is lowest in dipping, is straight, the two sides at their junction are rounded so as to describe nearly a quarter of a circle, and the inner side, 0 is nearly an ogee. The result of this shape of the inner sideis that the emptying of the bucket begins sooner, and is thus more speedily effected, than if the side were straight or a single curve, while the curvature at the junction of the two sides causes the water to pass gradually from one position to the other as the bucket turns, and, thus preventing any sudden check to its flow at any point, makes the process of dipping and discharging go on uniformly and without obstruction. Bracing-rods H, passing through. the washer from end to end and secured by nuts on the outside of its end pieces, may be used to strengthen it and (as shown in Fig. 3) so placed as not to obstruct the flow of water.

I am aware that previously to my invention a receiving-trough has been swung in the central portion of the washer, so as not to be carried around by the revolution of the washer but this suspension is from the central shaft, which I dispense with and, apart from the liability to he more or less moved by the revolution of the shaft, the dashing of the water on the trough causes it to sway back and forth, so that little or nothing is gained over the old method of discharging from the ends of the buckets through aholein one end of the washer. This disadvantage I obviate by firmly fixing the trough or other receiver on supports unconnected with the washer.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a washer, the receiver F, fixed rigidly and independently of the washer, so as not to be moved by the revolution of the washer or the shock of the water, substantially as described.

2. In a washer, one or more discharge-openings, r1, arranged between the receiver and the bearing of the washer, so as to be unobstructed by said bearin g, substantially as described.

3. In a washer, the discharging-cylinder D, having discharge-openings in its convex surface for the freer escape of the water, substantially as described.

4. The washer B, provided with exterior tubular journals, 1), of small diameter, in combination with the receiver F, provided with the exterior rods, f, arranged within the tubular journals 1) and supported independently of them, substantially as and for the purpose'described.

5. In a washer, buckets 0, having the crossscctions of their inner sides in the form of an ogee, in order to empty them the more speedily, substantially as described.

6. The buckets O, havingstraight outer sides, 0, curved inner sides, 0 and a quadrantal junction of the two, substantially as and for the purpose described.

7. Awasher having the small tubular shafts b, in combination with an unobstructed discharge-opening and a receiver provided with independent supporting-rods passing through the shafts, substantially as described.

GEORGE A. WHITIN G. Witnesses JOHN STRANGE, GEO. W. TODD. 

